Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 27th International Ocean and Polar Engineering Conference |
| Subtitle of host publication | ISOPE 2017 |
| Publisher | Society of Petroleum Engineers (SPE) |
| ISBN (electronic) | 9781880653975 |
| Publication status | Published - 2017 |
| Event | 27th International Ocean and Polar Engineering Conference, ISOPE 2017 - San Francisco, United States Duration: 25 Jun 2017 → 30 Jun 2017 |
Publication series
| Name | Proceedings of the International Offshore and Polar Engineering Conference |
|---|---|
| ISSN (Print) | 1098-6189 |
| ISSN (electronic) | 1555-1792 |
Abstract
The design of support structures of offshore wind turbines contains high number of design variables that influence load characteristics and structural responses. These variables are stochastic and cause many uncertainties. Some of them are examined in this study. It is investigated how scattering of site conditions and load parameters affect the structural response. It is exemplified in terms of stresses that contribute to the accumulated fatigue damage within a monopile substructure. Random sampling of combinations of site conditions and load parameters is performed in order to classify the effects of parameter scattering on the stress variability by means of Sobol' indices. Analysis shows that the highest influence on stress outputs have the variations in the load parameters. The reason is the sensitivity of the structural dynamical response to the wave height increase and decrease of distance between the wave peak frequency and the structural eigenfrequencies.
Keywords
- Monopile structure, Monte Carlo simulation, Offshore wind turbines, Sensitivity analysis, Sobol' indices, Wave load
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanical Engineering
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Proceedings of the 27th International Ocean and Polar Engineering Conference: ISOPE 2017. Society of Petroleum Engineers (SPE), 2017. (Proceedings of the International Offshore and Polar Engineering Conference).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Sensitivity Analysis of Monopiles’ Fatigue Stresses to Site Conditions Using Monte Carlo Simulation
AU - Glišić, Ana
AU - Ferraz, Gonçalo T.
AU - Schaumann, Peter
N1 - Funding Information: The authors acknowledge with thanks the support of the European Commission’s Framework Program “Horizon 2020”, through the Marie Skłodowska-Curie Innovative Training Networks (ITN) “AEOLUS4FUTURE - Efficient harvesting of the wind energy” (H2020-MSCA-ITN-2014: Grant agreement no. 643167). Publisher Copyright: Copyright © 2017 by the International Society of Offshore and Polar Engineers (ISOPE). Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017
Y1 - 2017
N2 - The design of support structures of offshore wind turbines contains high number of design variables that influence load characteristics and structural responses. These variables are stochastic and cause many uncertainties. Some of them are examined in this study. It is investigated how scattering of site conditions and load parameters affect the structural response. It is exemplified in terms of stresses that contribute to the accumulated fatigue damage within a monopile substructure. Random sampling of combinations of site conditions and load parameters is performed in order to classify the effects of parameter scattering on the stress variability by means of Sobol' indices. Analysis shows that the highest influence on stress outputs have the variations in the load parameters. The reason is the sensitivity of the structural dynamical response to the wave height increase and decrease of distance between the wave peak frequency and the structural eigenfrequencies.
AB - The design of support structures of offshore wind turbines contains high number of design variables that influence load characteristics and structural responses. These variables are stochastic and cause many uncertainties. Some of them are examined in this study. It is investigated how scattering of site conditions and load parameters affect the structural response. It is exemplified in terms of stresses that contribute to the accumulated fatigue damage within a monopile substructure. Random sampling of combinations of site conditions and load parameters is performed in order to classify the effects of parameter scattering on the stress variability by means of Sobol' indices. Analysis shows that the highest influence on stress outputs have the variations in the load parameters. The reason is the sensitivity of the structural dynamical response to the wave height increase and decrease of distance between the wave peak frequency and the structural eigenfrequencies.
KW - Monopile structure
KW - Monte Carlo simulation
KW - Offshore wind turbines
KW - Sensitivity analysis
KW - Sobol' indices
KW - Wave load
UR - http://www.scopus.com/inward/record.url?scp=85038898827&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85038898827
T3 - Proceedings of the International Offshore and Polar Engineering Conference
BT - Proceedings of the 27th International Ocean and Polar Engineering Conference
PB - Society of Petroleum Engineers (SPE)
T2 - 27th International Ocean and Polar Engineering Conference, ISOPE 2017
Y2 - 25 June 2017 through 30 June 2017
ER -